Agreed. My thesis was on the genetics of schizophrenia. A genetic contribution has been shown through twin adoption studies. Researching the literature, it turn

Agreed. My thesis was on the genetics of schizophrenia. A genetic contribution has been shown through twin adoption studies. Researching the literature, it turned out that there are hundreds of theories on the etiology of this psychosis. This was two decades ago. Hard biology eludes us to this day.